Rust proofing apparatus



Aug. 16, 1932. s. c. SAUNDERS ET AL f 1,872,507

nus: PROOFING APPARATUS Fild April 2, 1930 mmvrox aemaun a. 8AUNDER5-A'P e/anus a. WILLIAMS.

provide an improved Patented Aug. 16, 1932 SEYMOUR G. SAUNDERS, OF

BIRMINGHAM,

AND CHARLES C. WILLIAMS, 0]? DETROIT,

MICHIGAN, ASSIGN OES TO CHRYSLER CORPORATION, OF DETROIT, MICHIGAN, A

conronacrron on nnrawann BUST PROOFIN Application filed April 2,

This invention relates to an improved means for rust proofinginetal bodies,'particularly automobile bodies.

Heretofore, intreating automobile hodies with rust proofing solutions such ashonderizplant buildings where they should properly be located to maintaincontinuous production lines.

The main objects of this invention are to means for treating bodies with rust proofing. solutions which does not require heavy space consuming equipment-and. theutil'ization of large quantitics of liquid; to provide improved spraying apparatus for applying a rust proofing solutionv on continuously moving bodies; to provide means of this kind by which the entire exterior of a body is sprayed'with the solution during continuous movement of the body; and to provide improved spraying nozzles \Vh h ly in sheet form. v

Further objects of this invention are to provide means for washing vehicle bodies with alkali rinsing the bodies with water, treating the same with a rust proofing solution and finally rinsing the excess solution in spraying operations during progressive movement of the body.

An illustrative embodiment of this invention is shown in the accompanying drawing, in which:

Fig. 1 is a. fragmentary side elevation of our improved spraying apparatus.

Fig. 2 is a vertical section taken on line 2-2 of Fig. 1.

Fig. 3 is a section Fig.1. I

In'the form shown, our improved rust proofing apparatus includes a series of pairs of tanks 1 and 2 which are located one above the other. The spraying units are substan:

taken on line 3-3 of .18 and a suction 3h dischar e the solution suhstantialv o Arra s-Arcs 1930. Serial No. 441,117.

tially identical and for thisreason only, one unit is specifically described herein. The upper tank 1 is supported upon pipes 3 which extend into the lower tank 2 and communicate at their upper endswith the upper tank 1. These pipes are arranged along the longitudinal edge portions of the tanks 1 and 2 forming a passageway An upper pair of nozzles 5 and 6 having elongated discharge ends7 in which a slot 8 is formed; communicate with the pipes 3. Theelongated ends 7 of the discharge nozzles and 6 are disposed at opposite inclinations to, each other and are located substantially at the center of the passageway 4.

Communicating with the pipes 3 are lower nozzles 9, 10, 11 and 12 which are located at the sides of the passage 4. These nozzles are substantially alike in construction and they each have a ball jointcpart 13 which is swiveled in a socket 14 of a T-shaped pipe connection 15. i The tanks land 2 have open upper extremities 16 and 17 into which a filling pipe drain pipe 19 respectively extend. The drain pipe 19 is connected with the inlet of a pump 20 having a driving motor 21 and the pipe 18 is connected with the outlet of the pump.

'Mounted on the lower wall of the upper tank 1 is a supporting structure 22 which extends into the passageway & and supports a track 23. Shittably mounted on the track 28 are supports 24 having a y 25'onwhich rollers 26 are journaled. The supports 24 are adapted to convey a metal automohilebody 27 longitudinally through the passage. v I

In operation, rust proofing solution is fed into the'upper tank 1 from a source, not shown. The solution passes downwardly under the action of gravity through the pipes 3 and into the nozzles from which itis discharged in sheet like form on the exterior of the body 27 while the body is moving progres- [sively ends arch through which the The excess solution drips and is collected in the lower through the passage. The discharge 7 of the nozzles'substantially form an body 27 is conveyed. from the body 27 tank or pan 2 he shaped head from which it is lifted through the pipes 18 and 19, by the pump 20 into the upper tank 1 where it is again discharged or allowed to recirculate through the system. The lower 5 nozzles 9, 10, 11 and 12 may be adjusted in position so as to correspond to the curvatures of the upper and lower portions of bodies of different types, thereby assuring application of the solution on the entire side and curved 1o surfaces of the body.

Upper and lower valves 28 and 29 are provided in the ipes 3. for permitting either of the tanks to e completely drained so as to allow convenient cleaning thereof. By clos- 15 ing the upper valves 28 all the solution may be retained in the upper tank 1 and by opening the lower valves 29 the solution may be drained through the outlets 30 directly into the lower'tank 2.

go The adjacent spraying units illustrated in Fig. 1, are intended to be used in a continuous body treating process in which the first spraying unit from the'right is provided with a washing solution containing an alkali, the,

second is provided with a rinsing liquid, such as water, the third is provided with a rust proofing solution, and the fourth, not shown, is provided with a rinsing'solution such as water. With this apparatus, the vehicle bodies are successively subjected first to an alkali wash, then to a rinsing solution, then to the rust proofing solution and lastly to a final rinsing solution while the bodies are progressively moved through the passage be tween the pipes 3.

Although but one specific embodiment of this invention has herein been shown and described, it will be understood that various changes including the size, shape and ar rangement oi parts may be made without dearting from the spirit of our invention and it is not our intentlon to limit its scope other than by the terms of the appended claims.

We claim:

1. In apparatus for rust proofing bodies, a

pair of spaced tanks, one above the other, side pipes communicating with the upper tank and forming a passage bounded by said tanks and passageway, and a plurality of nozzles communicating with said pipes and extending inwardly of said passageway, the discharge ends of said nozzles forming an arch in the inltprior of said passageway for receiving said 0 y. I u

3. A device of the class described comprisin an upper rust proofing solution tank, pipes below said tank for supporting the latter and communicating with the side portions thereof forming a passageway therebetween, a track extending longitudinally of said passageway, means movably mounted on said track for conveying a body through said passageway, a eating with sai 1y of said passageway, the discharge ends of said nozzles forming an arch in the interior of said passageway for-receiving said body, a lower tank at the bottom of said passageway for collecting said rust proofing solution after it has drained from said body, and means for pumpgng the collected solution into said upper tan 4;. In a device of the class described a series of adjacent tanks, pi es communicating with the side portions 0 said tanks supporting thesame and forming a continuous passage therebelow, a support on said tanks extending longitudinally through said passage, a plurality of nozzles communicating with said tanks having their dischar e.ends directed inwardl of said assage, and means movably mounte on sai support for progressively conveying bodies through said passage and past said nozzles to subject said bodies to the action of respectively difi'erent contents of said tanks.

SEYMO G. SAUNDERS. "CHARLE C. WILLIAMS.

side pipes, means in said passage for shift- 7 abl supporting a body, and a plurality of outlet nozzles located below said upper tank communicating with said side pipes and extending inwardly into said assage, the discharge ends of said nozzles orming an arch for receiving said body, and means for feeding a rust proofing solution from the lower tank to the upper tank.

2. A deviceof the class described comprising an upper rust proofing solution tank,

pipes below said tank forsupporting the latter and communicating with the side portions thereof forming a passageway therebetween, a track extending longitudinally of said passageway, means movably mounted on said track for conveying a body through said lurality of nozzles communi- 

